A contactor

Abstract

This application provides a contactor, relating to the field of switching electrical equipment technology. The contactor includes: a contactor body with a mounting groove; an electromagnetic coil disposed in the contactor body; a coil terminal disposed in the contactor body and electrically connected to the electromagnetic coil; a wiring terminal disposed in the contactor body and spaced apart from the coil terminal; and an electrical connection assembly including a first electrical connector, a second electrical connector, and a third electrical connector. The third electrical connector passes through the mounting groove and is detachably connected to the contactor body. The third electrical connector is detachably connected to both the first and second electrical connectors. The first electrical connector is detachably connected to the wiring terminal, and the second electrical connector is detachably connected to the coil terminal. The contactor provided in this application replaces the existing one-piece design with separate parts, which is more conducive to parts assembly and thus improves the production efficiency of the contactor.

Description

Technical Field

[0001] This application relates to the field of switching electrical equipment technology, and more particularly to a contactor. Background Technology

[0002] The information disclosed in this background section is intended only to enhance the understanding of the general background of this disclosure and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art.

[0003] To facilitate wiring during user operation, contactor terminals are typically located at the top of the contactor body, away from the electromagnetic coil, resulting in a relatively long distance between the terminals and the coil. Existing contactors integrate the terminals and electrical connectors into a single unit, connecting them to the coil terminals after multiple bends to achieve electrical connection between the terminals and the electromagnetic coil. However, this integrated connection method is inconvenient for component assembly, thus impacting contactor production efficiency. Summary of the Invention

[0004] In view of this, the purpose of this application is to provide a contactor that solves the technical problem in the related art where the wiring terminals and electrical connectors are integrated into one unit, which leads to inconvenient parts assembly and affects the production efficiency of the contactor.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows:

[0006] Embodiments of this application provide a contactor, including:

[0007] The contactor body is provided with a mounting slot;

[0008] An electromagnetic coil is disposed on the contactor body;

[0009] A coil terminal is disposed on the contactor body and electrically connected to the electromagnetic coil;

[0010] A wiring terminal is disposed on the contactor body and spaced apart from the coil terminal;

[0011] An electrical connection assembly includes a first electrical connector, a second electrical connector, and a third electrical connector. The third electrical connector is disposed in the mounting groove and is detachably connected to the contactor body. The third electrical connector is detachably connected to both the first electrical connector and the second electrical connector. The first electrical connector is detachably connected to the terminal block, and the second electrical connector is detachably connected to the coil terminal.

[0012] In one embodiment, the first electrical connector is a first spring, the second electrical connector is a second spring, one end of the first spring abuts against the terminal block and the other end abuts against one end of the third electrical connector, one end of the second spring abuts against the coil terminal and the other end abuts against the end of the third electrical connector away from the first spring.

[0013] In one embodiment, the terminal block is provided with a first limiting portion passing through the first spring, one end of the third electrical connector is provided with a second limiting portion passing through the first spring, and the end of the third electrical connector away from the second limiting portion is provided with a third limiting portion, which passes through the second spring.

[0014] In one embodiment, the contactor further includes a mounting member disposed on the contactor body, the coil terminal being disposed on the mounting member, the mounting member having a limiting hole, and the second spring passing through the limiting hole.

[0015] In one embodiment, the mounting member is provided with a tapered hole located at the end of the limiting hole away from the coil terminal and communicating with the limiting hole, and the second spring passes through the tapered hole and the limiting hole respectively.

[0016] In one embodiment, one of the contactor body and the third electrical connector is provided with an elastic snap-fit ​​element, and the other is provided with a limiting groove; when the third electrical connector slides along the mounting groove to a preset position, the elastic snap-fit ​​element engages with the limiting groove.

[0017] In one embodiment, the contactor body is provided with the elastic snap-fit ​​member, and the third electrical connector is provided with two spaced-apart limiting grooves, which are mirror images of each other. The elastic snap-fit ​​member can engage with either of the two limiting grooves.

[0018] In one embodiment, the contactor body includes a base, a cover plate, and a protective cover. The base is provided with the mounting groove, the electromagnetic coil and the coil terminal are disposed on the base, the cover plate is connected to the base, the cover plate is provided with a slot communicating with the mounting groove, the wiring terminal is disposed on the cover plate and located at the slot, and the protective cover is provided with a plug-in portion that is inserted into the slot. The protective cover is used to cover the wiring terminal.

[0019] In one embodiment, the outer periphery of the base is partially enclosed within the mounting groove.

[0020] In one embodiment, the portion of the third electrical connector near the coil terminal is bent.

[0021] The beneficial effects of this application are as follows:

[0022] In the contactor provided in this application, the wiring terminals are connected to the coil terminals in sequence through the first electrical connector, the third electrical connector, and the second electrical connector, thereby realizing the electrical connection between the wiring terminals and the electromagnetic coil. At the same time, the wiring terminals, the first electrical connector, the second electrical connector, the third electrical connector, and the coil terminals are detachably connected to each other, thus replacing the existing one-piece parts with separate parts, which is more conducive to parts assembly and thus improves the production efficiency of the contactor.

[0023] To make the above-mentioned objectives, features and advantages of this application more apparent and understandable, preferred embodiments are described below in detail with reference to the accompanying drawings. Attached Figure Description

[0024] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0025] Figure 1 A three-dimensional structural schematic diagram of the contactor in one embodiment of this application is shown;

[0026] Figure 2 An exploded perspective view of the contactor in one embodiment of this application is shown;

[0027] Figure 3 This paper shows a schematic diagram of the contactor from one perspective in one embodiment of the present application;

[0028] Figure 4 It shows Figure 3 Schematic diagram of the cross-sectional structure at point AA;

[0029] Figure 5 It shows Figure 4 A magnified structural diagram of region C in the middle;

[0030] Figure 6 It shows Figure 3 Schematic diagram of the cross-sectional structure at point BB;

[0031] Figure 7 It shows Figure 6 A magnified structural diagram of region D in the middle;

[0032] Figure 8 This invention provides a schematic diagram of the contactor from another perspective in one embodiment of the present application.

[0033] Figure 9 It shows Figure 8 Schematic diagram of the cross-sectional structure at the middle EE;

[0034] Figure 10 It shows Figure 9 A magnified structural diagram of region F in the middle;

[0035] Figure 11 A three-dimensional assembly structure diagram of wiring terminals, coil terminals and electrical connection components in one embodiment of this application is shown.

[0036] Explanation of key component symbols:

[0037] 100-Contactor; 110-Contactor body; 111-Base; 1111-Mounting groove; 1112-Elastic snap-fit ​​element; 112-Cover plate; 1121-Slot; 113-Protective cover; 1131-Plug-in part; 120-Electromagnetic coil; 130-Coil terminal; 140-Terminal; 141-First limiting part; 150-Electrical connection assembly; 151-First electrical connector; 152-Second electrical connector; 153-Third electrical connector; 1531-Second limiting part; 1532-Third limiting part; 1533-Limiting groove; 160-Mounting element; 161-Limiting hole; 162-Conical hole. Detailed Implementation

[0038] The embodiments of this application are described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0039] In the description of this application, the terms "center", "longitudinal", "lateral", "length", "width", "height", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0040] Furthermore, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first and second features are in direct contact, or that they are in indirect contact through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0041] In the description of this application, the terms "first," "second," etc., are used to distinguish different objects and should not be construed as indicating or implying a specific order or hierarchy, or implicitly specifying the number of technical features indicated. Therefore, a feature marked "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly defined.

[0042] In the description of this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0043] In the description of this application, the term "and / or" indicates that three relationships can exist. For example, A and / or B can represent three cases: A alone, A and B simultaneously, and B alone. Additionally, the character " / " generally indicates that the preceding and following objects have an "or" relationship.

[0044] In the description of this application, "parallel" includes not only the case of absolute parallelism, but also the case of approximate parallelism as commonly understood in engineering; similarly, "perpendicular" also includes not only the case of absolute perpendicularity, but also the case of approximate perpendicularity as commonly understood in engineering. For example, if the angle between two directions is 80° to 90°, the two directions can be considered perpendicular; if the angle between two directions is 0° to 10°, the two directions can be considered parallel.

[0045] A contactor is a widely used switching device that typically utilizes electromagnetic principles to control the switching of the main circuit. To facilitate wiring for users, the contactor's terminals are usually located at the top of the contactor body, away from the electromagnetic coil. This results in a relatively long distance between the terminals and the coil, making electrical connection between the two more difficult.

[0046] Existing contactors integrate the terminals and electrical connectors into a single unit, which is then bent multiple times before being connected to the coil terminals to achieve electrical connection between the terminals and the electromagnetic coil. However, this integrated connection method is inconvenient for component assembly, thus affecting the contactor's production efficiency.

[0047] In addition, in existing contactors, the installation of electrical connectors requires slots to be cut on the outer periphery of the contactor body base, which necessitates the installation of a protective cover on the outer periphery of the base to protect the electrical connectors, increasing the overall size of the contactor and thus hindering the miniaturization design of the contactor.

[0048] like Figure 1 As shown, in order to solve the above-mentioned technical problems, an embodiment of this application provides a contactor 100, which relates to the field of switching electrical equipment technology, and is used to realize the switching on and off of the main circuit. It should be noted that the contactor 100 provided in this embodiment can be an AC contactor or a DC contactor, and no specific limitation is made here.

[0049] Combination Figures 2 to 4 As shown, the contactor 100 provided in this embodiment includes: a contactor body 110, an electromagnetic coil 120, a coil terminal 130, a wiring terminal 140, and an electrical connection assembly 150.

[0050] The contactor body 110 is provided with a mounting groove 1111. An electromagnetic coil 120 is disposed in the contactor body 110. A coil terminal 130 is disposed in the contactor body 110 and is electrically connected to the electromagnetic coil 120. A wiring terminal 140 is disposed in the contactor body 110 and is spaced apart from the coil terminal 130. The electrical connection assembly 150 includes a first electrical connector 151, a second electrical connector 152, and a third electrical connector 153. The third electrical connector 153 is disposed through the mounting groove 1111 and is detachably connected to the contactor body 110. The third electrical connector 153 is detachably connected to the first electrical connector 151 and the second electrical connector 152. The first electrical connector 151 is detachably connected to the wiring terminal 140, and the second electrical connector 152 is detachably connected to the coil terminal 130.

[0051] It should be noted that "detachable connection" can be understood as the ability to disassemble two objects, such as abutment, plug-in, snap-fit, screw connection, quick-release connection, etc., but does not include welding and one-piece molding.

[0052] It is understood that in the contactor 100 provided in this embodiment, the terminal 140 is connected to the coil terminal 130 in sequence through the first electrical connector 151, the third electrical connector 153, and the second electrical connector 152, thereby realizing the electrical connection between the terminal 140 and the electromagnetic coil 120. At the same time, adjacent pairs of the terminal 140, the first electrical connector 151, the second electrical connector 152, the third electrical connector 153, and the coil terminal 130 are detachably connected, thereby replacing the existing integrated part method with a separate part method, which is more conducive to part assembly and thus improves the production efficiency of the contactor 100.

[0053] like Figure 11 As shown, in one embodiment, the first electrical connector 151 is a first spring, and the second electrical connector 152 is a second spring. One end of the first spring abuts against the terminal 140, and the other end abuts against one end of the third electrical connector 153. One end of the second spring abuts against the coil terminal 130, and the other end abuts against the end of the third electrical connector 153 away from the first spring.

[0054] It is understandable that using a first spring as the first electrical connector 151 and a second spring as the second electrical connector 152 simplifies the part structure, makes assembly more convenient, and since springs are common standard parts, the manufacturing cost of the parts can be reduced.

[0055] like Figure 11 As shown, the terminal block 140 is further provided with a first limiting part 141 passing through the first spring, one end of the third electrical connector 153 is provided with a second limiting part 1531 passing through the first spring, and the end of the third electrical connector 153 away from the second limiting part 1531 is provided with a third limiting part 1532, which passes through the second spring.

[0056] It is understandable that by setting the first limiting part 141, the second limiting part 1531 and the third limiting part 1532, the limiting function can be achieved, the stability of the first spring and the second spring can be enhanced, the possibility of displacement or slippage of the first spring and the second spring can be reduced, thereby improving the stability of the electrical connection between the terminal 140 and the electromagnetic coil 120.

[0057] like Figures 3 to 5 As shown, the contactor 100 further includes a mounting member 160 disposed on the contactor body 110, a coil terminal 130 disposed on the mounting member 160, the mounting member 160 being provided with a limiting hole 161, and a second spring passing through the limiting hole 161.

[0058] It is understandable that by providing a limiting hole 161 on the mounting part 160, the second spring can be further limited to enhance its stability, thereby improving the stability of the electrical connection between the terminal 140 and the electromagnetic coil 120.

[0059] like Figures 3 to 5 As shown, further, the mounting component 160 is provided with a tapered hole 162, which is located at the end of the limiting hole 161 away from the coil terminal 130 and is connected to the limiting hole 161. The second spring passes through the tapered hole 162 and the limiting hole 161 respectively.

[0060] Understandably, the tapered hole 162, with its inclined walls, guides the second spring through the limiting hole 161, thus serving a guiding function. This facilitates the assembly of the parts and improves assembly efficiency. Simultaneously, the tapered hole 162 also further restricts the second spring, thereby enhancing its stability.

[0061] Furthermore, a corrosion-resistant coating is applied to parts of the first spring and parts of the second spring, thereby extending the service life of the electrical connection assembly 150.

[0062] In another embodiment, the first electrical connector 151 and / or the second electrical connector 152 are spring contacts. Specifically, the first electrical connector 151 is a first spring contact, the second electrical connector 152 is a second spring contact, the terminal 140 is provided with a first slot, the third electrical connector 153 is provided with a second slot and a third slot, and the coil terminal 130 is provided with a fourth slot. The first spring contact is respectively inserted into the first slot and the second slot, and the second spring contact is respectively inserted into the third slot and the fourth slot. This realizes the insertion between adjacent pairs of the terminal 140, the first electrical connector 151, the second electrical connector 152, the third electrical connector 153, and the coil terminal 130, and also realizes the detachable connection. No specific restrictions are placed on the structure of the first electrical connector 151 and the second electrical connector 152 here.

[0063] like Figure 1 as well as Figures 8 to 10 As shown, in one embodiment, one of the contactor body 110 and the third electrical connector 153 is provided with an elastic snap-fit ​​member 1112, and the other is provided with a limiting groove 1533; when the third electrical connector 153 slides along the mounting groove 1111 to a preset position, the elastic snap-fit ​​member 1112 engages with the limiting groove 1533.

[0064] For example, the contactor body 110 is provided with a resilient snap-fit ​​member 1112, and the third electrical connector 153 is provided with a limiting groove 1533. Of course, it is also possible that the contactor body 110 is provided with a limiting groove 1533, and the third electrical connector 153 is provided with a resilient snap-fit ​​member 1112.

[0065] For example, the elastic snap-fit ​​1112 can be a plastic snap-fit ​​or a combination of a spring and a steel ball (the spring is connected between the steel ball and the contactor body 110, and the steel ball can be snapped into or slide out of the limiting groove 1533 under the elastic force generated by the spring). No specific restrictions are placed on the structure of the elastic snap-fit ​​1112 here.

[0066] It is understandable that, since one of the contactor body 110 and the third electrical connector 153 is provided with an elastic snap-fit ​​1112 and the other is provided with a limiting groove 1533, when the third electrical connector 153 slides along the mounting groove 1111 to the preset position, the elastic snap-fit ​​1112 engages with the limiting groove 1533. This achieves a quick connection between the third electrical connector 153 and the contactor body 110, facilitates the installation of the third electrical connector 153, and thus improves the production efficiency of the contactor 100.

[0067] Meanwhile, the engagement of the elastic snap-fit ​​1112 with the limiting groove 1533, in conjunction with the installation groove 1111, can effectively restrict the movement of the third electrical connector 153 relative to the contactor body 110, making the electrical connection between the terminal block 140 and the electromagnetic coil 120 more stable.

[0068] like Figure 1 as well as Figures 8 to 10 As shown, the contactor body 110 is further provided with a flexible snap-fit ​​member 1112, and the third electrical connector 153 is provided with two spaced-apart limiting grooves 1533, which are mirror images of each other. The flexible snap-fit ​​member 1112 can engage with either of the two limiting grooves 1533.

[0069] It is understandable that by mirroring two limiting grooves 1533 on the third electrical connector 153, the third electrical connector 153 can be universal at the input and output ends, increasing the versatility of the parts and thus reducing material costs.

[0070] In another embodiment, the third electrical connector 153 can be detachably connected to the contactor body 110 by screwing it through the third electrical connector 153 and connecting it to the contactor body 110, or by providing a pin hole on the third electrical connector 153 and a pin that can be movably inserted through the pin hole on the contactor body 110. No specific restrictions are placed on the way the third electrical connector 153 and the contactor body 110 can be detachably connected.

[0071] like Figure 3 , Figure 6 and Figure 7As shown, in one embodiment, the contactor body 110 includes a base 111, a cover plate 112, and a protective cover 113. The base 111 is provided with a mounting groove 1111. An electromagnetic coil 120 and a coil terminal 130 are disposed on the base 111. The cover plate 112 is connected to the base 111 and is provided with a slot 1121 communicating with the mounting groove 1111. A wiring terminal 140 is disposed on the cover plate 112 and located at the slot 1121. The protective cover 113 is provided with a plug-in portion 1131 that is inserted into the slot 1121. The protective cover 113 is used to cover the wiring terminal 140.

[0072] Understandably, the protective cover 113 serves to protect the terminal block 140, reducing the risk of short circuits or personal safety accidents caused by the terminal block 140 coming into contact with external objects. Simultaneously, the insertion part 1131 and the slot 1121 allow the protective cover 113 to be inserted into the cover plate 112, improving the dustproof and waterproof performance of the protective cover 113.

[0073] like Figure 2 As shown, the outer periphery of the base 111 is partially enclosed in the mounting groove 1111, meaning that the mounting groove 1111 does not penetrate the outer periphery of the base 111 and is exposed to the outside. This eliminates the need for a protective cover on the outer periphery of the base 111, which is beneficial for the miniaturization design of the contactor 100 and reduces the manufacturing cost of the contactor 100.

[0074] like Figure 11 As shown, in one embodiment, the portion of the third electrical connector 153 near the coil terminal 130 is bent, which facilitates precise contact between the second electrical connector 152 and the coil terminal 130. Especially when the second electrical connector 152 is a second spring, it can make the second spring abut against the coil terminal 130 perpendicularly, while also enhancing the structural strength and stability of the third electrical connector 153, thereby improving the stability of the electrical connection between the terminal 140 and the electromagnetic coil 120.

[0075] In summary, when assembling the electrical connection assembly 150, for example, the third electrical connector 153 can be inserted from bottom to top into the mounting groove 1111 until the elastic snap-fit ​​1112 engages with the limiting groove 1533. Then, the first spring is placed between the terminal 140 and the third electrical connector 153, so that the first limiting part 141 passes through the first spring and the second limiting part 1531 passes through the first spring. The second spring is placed between the third electrical connector 153 and the coil terminal 130, so that the third limiting part 1532 passes through the second spring and the second spring abuts against the coil terminal 130. This completes the assembly of the electrical connection assembly 150. The structure is simple and reliable, and it is easy to realize the electrical connection between the terminal 140 and the electromagnetic coil 120.

[0076] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0077] Although embodiments of this application have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting this application. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of this application.

Claims

1. A contactor, characterized in that, include: The contactor body (110) is provided with a mounting groove (1111); An electromagnetic coil (120) is disposed on the contactor body (110); A coil terminal (130) is disposed on the contactor body (110) and electrically connected to the electromagnetic coil (120); A terminal block (140) is disposed on the contactor body (110) and spaced apart from the coil terminal (130); An electrical connection assembly (150) includes a first electrical connector (151), a second electrical connector (152), and a third electrical connector (153). The third electrical connector (153) is disposed through the mounting groove (1111) and is detachably connected to the contactor body (110). The third electrical connector (153) is detachably connected to the first electrical connector (151) and the second electrical connector (152) respectively. The first electrical connector (151) is detachably connected to the terminal block (140), and the second electrical connector (152) is detachably connected to the coil terminal (130).

2. The contactor according to claim 1, characterized in that, The first electrical connector (151) is a first spring, and the second electrical connector (152) is a second spring. One end of the first spring abuts against the terminal (140), and the other end abuts against one end of the third electrical connector (153). One end of the second spring abuts against the coil terminal (130), and the other end abuts against the end of the third electrical connector (153) away from the first spring.

3. The contactor according to claim 2, characterized in that, The terminal block (140) is provided with a first limiting part (141) passing through the first spring, one end of the third electrical connector (153) is provided with a second limiting part (1531) passing through the first spring, and the end of the third electrical connector (153) away from the second limiting part (1531) is provided with a third limiting part (1532), and the third limiting part (1532) passes through the second spring.

4. The contactor according to claim 2, characterized in that, The contactor also includes a mounting member (160) disposed on the contactor body (110), the coil terminal (130) is disposed on the mounting member (160), the mounting member (160) is provided with a limiting hole (161), and the second spring passes through the limiting hole (161).

5. The contactor according to claim 4, characterized in that, The mounting component (160) is provided with a tapered hole (162), which is located at the end of the limiting hole (161) away from the coil terminal (130) and communicates with the limiting hole (161). The second spring passes through the tapered hole (162) and the limiting hole (161) respectively.

6. The contactor according to claim 1, characterized in that, One of the contactor body (110) and the third electrical connector (153) is provided with an elastic snap-fit ​​member (1112), and the other is provided with a limiting groove (1533); when the third electrical connector (153) slides along the mounting groove (1111) to a preset position, the elastic snap-fit ​​member (1112) engages with the limiting groove (1533).

7. The contactor according to claim 6, characterized in that, The contactor body (110) is provided with the elastic snap-fit ​​member (1112), and the third electrical connector (153) is provided with two spaced-apart limiting grooves (1533). The two limiting grooves (1533) are mirror images of each other, and the elastic snap-fit ​​member (1112) can engage with either of the two limiting grooves (1533).

8. The contactor according to any one of claims 1 to 7, characterized in that, The contactor body (110) includes a base (111), a cover plate (112), and a protective cover (113). The base (111) is provided with the mounting groove (1111). The electromagnetic coil (120) and the coil terminal (130) are disposed on the base (111). The cover plate (112) is connected to the base (111). The cover plate (112) is provided with a slot (1121) communicating with the mounting groove (1111). The wiring terminal (140) is disposed on the cover plate (112) and located at the slot (1121). The protective cover (113) is provided with a plug-in part (1131) that is inserted into the slot (1121). The protective cover (113) is used to cover the wiring terminal (140).

9. The contactor according to claim 8, characterized in that, The outer periphery of the base (111) is partially enclosed in the mounting groove (1111).

10. The contactor according to any one of claims 1 to 7, characterized in that, The third electrical connector (153) is bent near the coil terminal (130).

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